single thrust cam bearing, what is this protrusion? |
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single thrust cam bearing, what is this protrusion? |
malcolm2 |
May 30 2020, 12:57 PM
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#1
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Assembling my engine. I noticed that the cam thrust bearing as a smaller tang. My case does not have the notch.
Since this is a smaller tang, designed a bit different. I am I supposed to tap it in place and let the action of bolting up the case crush it in place? I built a 1911 about 7 years ago, and I do not remember having issues like this. I am pretty sure I bought all my innards from Type4 store back then too. Clark Notice no notch in the saddle..... ? |
Mark Henry |
May 31 2020, 06:57 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
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Grind or file the tang off, I do this every build. The cam bearing has a fair bit of crush plus the cam only spins half as fast as the crank, so it won't go anywhere. Just be careful, go slow, make sure to only remove the tang, but at the same time you have to remove the whole tang. Every build I do I use two thrust bearings, so yes I use two sets of cam bearings to get the 2nd thrust, but you can buy sets that are already dual thrust. This is the term "dual thrust bearings", it's not talking about the bearing function, it means there's a pair (2) of thrust bearings, which is of course a mod. Cam bearings are VW generic so the bean counters must of decided to only make one style of thrust bearing...with the tang. Interesting note the Porsche /6 intermediate shaft bearings are VW cam bearings, just the hole is in a different spot, but dimensional it's identical. |
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